Multiple cavity/compartment package

Abstract

A package assembly for electronic components that allows for low-cost multiple cavities as well as a multiple compartment structure that allows more components in a smaller package size. In one embodiment the present invention is a multi-cavity package having at least one substrate forming at least one cavity with the substrate coupled to a shelf within the sidewalls of the package.

1. A multiple cavity structure, comprising:
 a package housing comprising a package floor and package sides, said package sides extending about said package floor, wherein said package sides form a first shelf extending about a periphery of an inner surface of the package sides; 
 a planar substrate coupled to said shelf forming a first cavity between said package floor and said substrate, wherein said substrate has at least one substrate component on at least one surface of said substrate; 
 a covering on said package housing, wherein said covering forms a second cavity between said covering and said substrate; and 
 at least one via proximate said shelf and electrically coupling said substrate. 
 
     
     
       2. The structure according to  claim 1 , wherein said package housing is ceramic. 
     
     
       3. The structure according to  claim 1 , wherein said substrate is selected from at least one of the group consisting of: thick film, thin film, and flex film. 
     
     
       4. The structure according to  claim 1 , wherein said covering is a lid adhered to a rim of said package sides. 
     
     
       5. The structure according to  claim 1 , wherein said covering is glob top filler. 
     
     
       6. The structure according to  claim 1 , wherein said first cavity is hermetic. 
     
     
       7. The structure according to  claim 1 , wherein said first and second cavity are hermetic. 
     
     
       8. The structure according to  claim 1 , wherein said substrate is secured to said shelf by a conductive substrate attach material. 
     
     
       9. The structure according to  claim 1 , further comprising at least one package component mounted to a surface selected from the group consisting of: package floor, interior covering surface, and side walls. 
     
     
       10. The structure according to  claim 9 , wherein substrate components and said package component are electrically coupled by at least one electrical coupler from the group consisting of: wire bonds, vias, through-holes, and traces. 
     
     
       11. A multiple compartment, multiple cavity package, comprising:
 a package housing forming an open-top enclosure comprising, a package floor and, package sides about said package floor, wherein said package sides form a first shelf extending about a periphery of an inner surface of the package sides; 
 a first substantially planar substrate coupled about said first shelf and forming a first cavity between said package floor and said first substrate; and 
 at least one inner wall approximately orthogonal to said package floor coupled to said package sides and to said substrate, wherein said at least one inner wall forms at least two compartments in said first cavity. 
 
     
     
       12. The package according to  claim 11 , wherein at least one of said compartments is hermetic. 
     
     
       13. The package according to  claim 11 , further comprising at least one component coupled on at least once surface of said substrate, wherein said component is monolithically integrated. 
     
     
       14. The package according to  claim 11 , further comprising vias proximate said shelf and electrically coupling said substrate. 
     
     
       15. The package according to  claim 11 , wherein said first cavity is hermetic. 
     
     
       16. The package according to  claim 11 , further comprising a covering on said open-top enclosure, wherein said covering forms a second cavity between said covering and said substrate. 
     
     
       17. The package according to  claim 11 , further comprising a second shelf formed about the periphery of the inner surface of the package sides and being approximately parallel to said first shelf and disposed between said covering and said first shelf, wherein a second substrate is coupled to said second shelf forming a third cavity between said exposed top portion and said second substrate, and wherein said second cavity is disposed between said first and second substrate. 
     
     
       18. The package according to  claim 16 , further comprising at least one package component mounted to a surface selected from the group consisting of: package floor, interior covering surface, and side walls. 
     
     
       19. The package according to  claim 11 , wherein substrate components and said package component are electrically coupled by at least one electrical coupler from the group consisting of: wire bonds, vias, through-holes, and traces. 
     
     
       20. The package according to  claim 11 , wherein said at least one inner wall is a drop-in.